Consequences for late payment of subscription

Hi there,

I have 2TB plan ( which I have been on for years) and it is two weeks overdue for payment of the subscription plan.  Wondering what the consequences of this will be if I still am unable to pay it for another couple of weeks.

Will all my stuff just stay there, and I won't be able to sync until paid?  Will I still be able to access it? and when I pay will it all be back to normal again?

I tried to search this info elsewhere but couldn't find the answer.

Thanks in advance for your help!